800A resistor gets tapped holes for mounting and connections

WSBS8518…M3 and WSBS8518…M4 are 36W battery shunt resistors featuring M3 and M4 tapped holes (close to the centre in the photo), respectively. The resistors are 85 x 18 x 3mm

With resistance values down to 50µΩ, Vishay markets them as a more accurate lower costs alternative to Hall effect sensing “while their tapped holes aid in PCB mounting, provide extra support against vibration, and offer a location to attach voltage sense pins,” said the firm.

Values of 50, 100, 125, and 250µΩ are available, from a solid metal manganese-copper alloy resistive element with ±20ppm/°C temperature coefficient and a welded terminal-to-element connection that allows for up to 848A of continuous current (resistance dependent).

Inductance is <5 nH, thermal EMF can be as low as <3µV/°C, and an operating temperature ranges across -65 to +170°C.

The devices are RoHS-compliant, halogen-free, and Vishay Green.

Applications are expected in petrol, diesel, hybrid, and electric cars and trucks, as well as electric forklifts, UPS systems, and other heavy industrial applications.

Samples and production quantities are available now, with 10 to 12 weeks lead for larger orders.